Tried to take part in a 20 man siege which included three different forts against the GoT nerds from my last server update. Unfortunately, animations aren't refined yet and the game is barely optimized, so getting any more than 10 people in the same area will instantly drop my performance. I'll see if I can get some screenshots from the actual battle from one of my friends who could actually play during the fight.
We had to organize people from three different villages, once everybody got together we had roughly 20 (give or take one or two people) split between two units. Currently there are no actual siege tools implemented, so the only way to get over a wall without exploiting or ruining their fort is to stack logs / barrels on top of each other to make a ladder of some kind. We spent a good 20 minutes at our own base trying out different ways to stack logs up efficiently, and pretty much mastered the art of using just a few logs to make an effective ladder.
Of course, all of that practice went out the window once the crossbow bolts started flying. We had positioned a scout outside of their fort an hour before, and he had been giving us real time updates during the entire trip there. The GoT nerds had 8 - 10 people in their fort, all of which were naked and unarmed. They had no idea that they were about to get shit on, their leader actually said "we're basically allied with all of the major towns" about 30 minutes before three of the major towns attacked them at the same time.
Server rules required us to give a small warning before we actually started attacking. We arrived outside of their fort and half of our men equipped hatchets and started chopping down trees to use for the ladder. The GoT guys grabbed crossbows and started shooting at us, only three people got hit and none were killed. Jamie Lannister himself was using the reload exploit to use his light crossbow as a machinegun and was standing on the walls in his full royal plate. Our previously mentioned scout, managed to get a very lucky shot off and hit him in the knee for 36 piercing damage, basically crippling him and sending the Lannister leader into unconsciousness.
We scaled the walls and stripped him of his weapons and armor. A few of the Lannisters tried to put up a fight, but they were cut down and the rest ended up combat logging. Jamie Lannister woke up and managed to slip by us and ran into his house, where he locked himself and their best loot in for the rest of the siege. At this point we had basically captured the entire base, so we built camp fires outside of his window and started taunting him.
Jamie got pretty mad in the end, he bragged about beating us in the 3 vs 12 and proceeded to claim that they didn't lose anything of value (lol 200 rope and 10 locks.)
edit: oh shit somebody streamed it:
http://www.twitch.tv/ret311/b/577275906